Conciseness

The body is operational rather than conceptual (no re-explanation of what a PDF is), but carries substantial non-actionable scaffolding — the "SSL primitive" action table, "Resource scope" table (LOCAL_FS/PROCESS/MEMORY/OTHER), "Scenes" labels, and "Intent signature" — that adds tokens without guidance value, and dependency/command information is repeated across sections. It fits the 'mostly efficient but could be tightened' anchor, not level 4, because whole sections could be cut without losing actionable content.

Actionability

Concrete, runnable commands are given for the probe, standard conversion, mdformat, and the hybrid OCR path, plus specific retry flags (--use-struct-tree, --table-method cluster, --markdown-with-html, --ocr-lang "ko,en") and a concrete failure/recovery table. It stops short of level 5 because commands use placeholders ({input_path}, {languages}) rather than a worked example, and common-case flag usage is deferred to resources/execution-protocol.md.

Workflow Clarity

The flow is explicitly sequenced (Entry → PREPARE/ACQUIRE/ACT/VERIFY/FINALIZE → Exit) with a text-layer probe as a validation checkpoint, explicit decision branches in Transitions, a dedicated VERIFY scene, and a failure/recovery table with feedback loops (garbled output → retry tagged/hybrid; missing tables → retry cluster method; OCR mismatch → retry with explicit languages). This matches the level-5 anchor with explicit validation and error-recovery loops.

Progressive Disclosure

Detail is deliberately deferred to one-level-deep references (guardrail: "Keep detailed command sequences in resources/execution-protocol.md rather than duplicating every variant here") and a References section lists the four targets clearly. It is not level 5 because the reference entries are bare paths with minimal signaling of their contents, two references point outside the skill directory (../_shared/core/...), and no bundle files were provided to verify the referenced paths exist.

Specificity

"Extract PDF text, headings, tables, and images into Markdown" names four concrete extraction actions plus the output format, matching the comprehensive multi-action anchor. It does not pad with abstract language, so it is not the level-4 anchor with 'minor gaps in coverage' — the action list covers the skill's full capability surface.

Completeness

The 'what' is explicit ("Extract PDF text, headings, tables, and images into Markdown using opendataloader-pdf") and the 'when' is present as an explicit trigger clause ("Use for PDF parsing, not PDF layout creation"), so it clears the level-3 cap. It is not level 5 because the when-clause is narrow — it names only "PDF parsing" and omits extraction/conversion/markdown triggers that the good example includes.

Trigger Term Quality

Natural terms present include "PDF text", "PDF parsing", "Extract", and "into Markdown", which map well to what users say. It falls short of the level-5 anchor because it lacks synonyms and file extensions ("PDFs", ".pdf", "convert PDF to markdown") that comprehensive coverage would include.

Distinctiveness Conflict Risk

"Use for PDF parsing, not PDF layout creation" explicitly disambiguates from PDF-generation skills, and the tool-specific niche (opendataloader-pdf extraction to Markdown) gives it distinct triggers with minimal conflict risk. It matches the clear-niche anchor rather than the level-4 'minor overlap risk' anchor.